| 摘要 |
PCT No. PCT/GB95/00710 Sec. 371 Date Dec. 1, 1995 Sec. 102(e) Date Dec. 1, 1995 PCT Filed Mar. 29, 1995 PCT Pub. No. WO95/26491 PCT Pub. Date Oct. 5, 1995A mounting device for a telescopic ball-bar has a hexagonal shank retained in jaws of a chuck on a spindle of a lathe. A supporting bracket extending from the shank carries a magnetic socket in one of a plurality of locations, and receivably mounts one end of the ball-bar for universal pivotal motion. The configuration of the bracket, the spacing between the socket and the shank, and the orientation of the socket, are such that the other end of the ball-bar, which is universally pivotally mounted to the tool post of the lathe, may execute a circular trajectory of greater than 180 DEG , which trajectory intersects the axis of rotation of the lathe. |
